smrc 환경 audit report

생성 시점: 2026-06-12

Target Device

• Selected SN: S77UNG0TC00101
• Model: MZOL63T8HDLT-00AFB
• Controller: /dev/nvme0
• Block namespace: /dev/nvme0n1
• Generic char namespace for io_uring_cmd: /dev/ng0n1
• Namespace ID: 1
• Endurance Group ID: 1 (nvme_idns.txt: endgid : 1)
• Capacity: 3,760,740,458,496 bytes, about 3.76 TB
• LBA format: 4 KiB + 0 B (lbads:12)

Raw input directory: fdp/02_smrc_env/raw/.

FDP Capability

nvme fdp configs /dev/nvme0 --endgrp-id=1 succeeded.

Item	Value
FDP Attributes	0x80
Reclaim Groups	1
Reclaim Unit Handles	8
Namespaces Supported	2
Reclaim Unit Nominal Size	13,079,937,024 bytes

RUH list: 0..7, all reported as Initially Isolated.

nvme fdp status /dev/nvme0 --namespace-id=1 currently shows placement identifiers 0..3; nvme fdp usage reports RUH 0..3 as Host Specified and RUH 4..7 as Unused. For the first build/sanity run, use:

export FDP_RUHS=0,1,2,3

For the PoC WAF harness, the scripts are configured for an 8-RUH device and map classes to RUH 0..7. If RUH 4..7 fail at runtime, rerun with FDP_RUH_COUNT=4.

Toolchain

Tool	Status
rustc	1.75.0
cargo	1.75.0
python3	3.10.12
liburing	2.0
nvme-cli	2.15, libnvme 1.15
gcc	11.4.0
GPU	H100 visible
maturin	missing globally, but build_and_test.sh installs it into .venv
xnvme	not captured in this precheck result

Permissions

• /dev/nvme0n1: root:disk, mode brw-rw----
• Mount status: not mounted
• blkdiscard: present

The namespace is suitable for raw-block tests from a mount-safety perspective. Raw writes and blkdiscard are still destructive and should only target /dev/nvme0n1.

Measurement Notes

• Standard SMART host write counter is available (Data Units Written present).
• Vendor media/NAND write counter probe was not captured in this precheck output, so PoC harness WAF may be unavailable unless VENDOR_MEDIA_WRITE_COMMAND is supplied.
• xnvme probe was not captured. If xnvme is missing, PoC harness can still run, but FDP log collection may warn or be incomplete.

Suggested next commands:

cd /home/ny/work/fdp/03_build_test
export REPO=/home/ny/work/LMCache-fdp-poc-src
export NVME_DEV=/dev/nvme0
export NVME_NS=/dev/nvme0n1
export NVME_IO_DEV=/dev/ng0n1
export FDP_RUHS=0,1,2,3
export OUT=$HOME/fdp_build_test
bash build_and_test.sh